Steel Plant Recovers Waste Heat

November 6, 2014 By Linda Hardesty

TurbodenTurboden implemented an Organic Rankine Cycle (ORC)-based heat recovery plant on an Electric Arc Furnace at Elbe-Stahlwerke Feralpi iron and steel manufacturing plant in Germany.

The 3 MW electrical output ORC unit uses a portion of the saturated steam produced and recovers heat from the exhaust gases downstream at the factory. The heat recovery system is connected to the off-gas treatment system of the melting electric furnace. The recovered energy reduces net power consumption. Turboden says this technology is best applied in energy-intensive industries such as glass, cement, aluminum and iron & steel, where production processes typically generate exhaust gases above 250°C.

In addition to electricity production, the remaining portion of the steam is fed into the local municipal steam supply system and used in a nearby tire factory production process.

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